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1. WO2020130099 - THERMOSENSITIVE RECORDING MEDIUM

Publication Number WO/2020/130099
Publication Date 25.06.2020
International Application No. PCT/JP2019/049925
International Filing Date 19.12.2019
IPC
B41M 5/323 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
30using chemical colour formers
323Organic colour formers, e.g. leuco dyes
B41M 5/333 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
30using chemical colour formers
333Colour developing components therefor, e.g. acidic compounds
B41M 5/42 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
40characterised by the base, intermediate or covering layers; Heat, radiation filtering or absorbing means or layers; combined with layers or compositions suitable for other methods of image registration; Special originals for reproduction by thermography
42Intermediate or covering layers
Applicants
  • RICOH COMPANY, LTD. [JP]/[JP] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JO, JP, KE, KG, KH, KM, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
  • BIE, Pauline (US)
  • IWATA, Daiki (US)
  • KOCAK, Erkan (US)
Inventors
  • BIE, Pauline
  • IWATA, Daiki
  • KOCAK, Erkan
Agents
  • ITOH, Tadashige
  • ITOH, Tadahiko
Priority Data
18306747.919.12.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) THERMOSENSITIVE RECORDING MEDIUM
(FR) SUPPORT D'IMPRESSION THERMOSENSIBLE
Abstract
(EN)
In one aspect, the present invention relates to a thermosensitive recording medium comprising at least: - a support layer; - a thermosensitive colouring layer over the support layer, the thermosensitive colouring layer containing a leuco dye; and - a protective layer over the thermosensitive colouring layer; wherein the thermosensitive colouring layer comprises a developer having the general formula (I) below: wherein R1 to R3 each independently represent a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 alkoxyl group, a C1-C6 fluoroalkyl group; characterized in that the protective layer comprises particles of wax with an average particle size of at least 0.05 μm and at most 2.0 μm. In further aspects, the present invention relates to a label for attachment to a product comprising the thermosensitive recording medium of the invention, and to a consumer product package to which a thermosensitive recording medium or a label of the invention has been attached.
(FR)
Selon un aspect, la présente invention concerne un support d'impression thermosensible comprenant au moins : - une couche de support ; - une couche de coloration thermosensible sur la couche de support, la couche de coloration thermosensible contenant un leuco-colorant ; et - une couche de protection sur la couche de coloration thermosensible ; la couche de coloration thermosensible comprenant un révélateur de formule générale (I) ci-dessous : où R1 à R3 représentent chacun indépendamment un atome d'hydrogène, un atome d'halogène, un groupe alkyle en C1-C6, un groupe alcoxy en C1-C6, un groupe fluoroalkyle en C1-C6 ; caractérisé en ce que la couche de protection comprend des particules de cire ayant une taille de particule moyenne d'au moins 0,05 µm et d'au plus 2,0 µm. Selon d'autres aspects, la présente invention se rapporte à une étiquette destinée à être fixée à un produit comprenant le support d'impression thermosensible selon l'invention, et à un emballage de produit de consommation auquel un support d'impression thermosensible ou une étiquette selon l'invention a été fixé(e).
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